LT1083/84/85 Fixed
ABSOLUTE
MAXIMUM
RATINGS
Power Dissipation............................... Internally Limited
Input Voltage (Note 1) ............................................. 30V
Operating Input Voltage
3.3V, 3.6V Devices ............................................ 20V
5V Devices ........................................................ 20V
12V Devices ...................................................... 25V
Operating Junction Temperature Range
“C” Grades
Control Section ............................... 0°C to 125°C
Power Transistor ............................. 0°C to 150°C
“M” Grades
Control Section ........................... –55°C to 150°C
Power Transistor ......................... –55°C to 200°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
Note 1:
Although the devices maximum operating voltage is limited, (20V
for a 3V, 5V device, and 25V for a 12V device) the devices are guaranteed
to withstand transient input voltages up to 30V. For input voltages greater
than the maximum operating input voltage some degradation of
specifications will occur. For input/output voltage differentials greater than
15V, a minimum external load of 5mA is required to maintain regulation.
PRECONDITIONING
100% Thermal Limit Functional Test.
PACKAGE/ORDER INFORMATION
V
IN
2
CASE IS
OUTPUT
ORDER PART NUMBER
LT1083CK-5
LT1083CK-12
LT1083MK-5
LT1083MK-12
LT1084CK-5
LT1084CK-12
LT1084MK-5
LT1084MK-12
LT1085CK-5
LT1085CK-12
LT1085MK-5
LT1085MK-12
TAB IS
OUTPUT
FRONT VIEW
3
2
1
P PACKAGE
3-LEAD TO-3P PLASTIC
1
GND
K PACKAGE
2-LEAD TO-3 METAL CAN
θ
JA
= 35°C/W
FRONT VIEW
θ
JA
= 45°C/W
FRONT VIEW
3
TAB IS
OUTPUT
2
1
M PACKAGE
3-LEAD PLASTIC DD
V
IN
V
OUT
GND
TAB IS
OUTPUT
3
2
1
T PACKAGE
3-LEAD PLASTIC TO-220
V
IN
V
OUT
GND
θ
JA
= 50°C/W
LT1084CT-3.3
LT1084CT-5
LT1084CT-12
LT1085CT-3.3
LT1085CT-3.6
LT1085CT-5
LT1085CT-12
θ
JA
= 30°C/W*
* WITH PACKAGE SOLDERED TO 0.52IN
2
COPPER AREA OVER BACKSIDE GROUND
PLANE OR INTERNAL POWER PLANE.
θ
JA
CAN
VARY FROM 20°C/W TO > 40°C/W DEPENDING
ON MOUNTING TECHNIQUE.
Consult factory for Industrial grade parts.
ELECTRICAL CHARACTERISTICS
PARAMETER
Output Voltage
CONDITIONS
LT1084-3.3
LT1085-3.3
LT1085-3.6
I
OUT
= 0mA, T
J
= 25°C, V
IN
= 8V (K Package Only)
0
≤
I
OUT
≤
5A, 4.8V
≤
V
IN
≤
15V (Note 8)
V
IN
= 5V, I
OUT
= 0mA, T
J
= 25°C (K Package Only)
4.8V
≤
V
IN
≤
15V, 0
≤
I
OUT
≤
3A (Note 8)
V
IN
= 5V, I
OUT
= 0mA, T
J
= 25°C (K Package Only)
5V
≤
V
IN
≤
15V, 0
≤
I
OUT
≤
3A (Note 8)
5V
≤
V
IN
≤
15V, 0
≤
I
OUT
≤
3A, TJ
≥
0°C (Note 8)
q
q
q
MIN
3.270
3.235
3.270
3.235
3.564
3.500
3.528
TYP
3.300
3.300
3.300
3.300
3.600
MAX
3.330
3.365
3.330
3.365
3.636
3.672
3.672
UNITS
V
V
V
V
V
V
V
2
UU
U
U
U
W
W W
U
W
ORDER PART NUMBER
V
IN
V
OUT
GND
LT1083CP-5
LT1083CP-12
LT1084CP-5
LT1084CP-12
LT1085CM-3.3
LT1085CM-3.6
LINER [ LINEAR TECHNOLOGY ]
